Ikea Lack printable foot replacement

I had to cut of some Ikea Lack feet to set the furniture to the expected height. As you might know, the Lack feet are hollow hard board and pretty fragile once shorten. So I designed a replacement feet that solve the issue. 

I wanted it discreet, with a proportion matching the existing furniture. 
You cant print it out of any material including flexible ones. 
The protruding end is only 3mm.
The part is designed for friction fit, but securing it with a bit of glue is probably not a bad idea. 

Enjoy :)